stoner



(No Model.) 2v.Sheeta---Sheet1.,4

J. B. STONER.

ELEVATOR.

Patented 001. 13,v 1891.

me News 51ans ca marianna., msmncm u, n. cA

(No Model.) 2 Sheets-Sheet 2.

J.B.`ST0NBR.

BLEVATOR.

` Patented Oot. 13, 1891.. $59.2

me uonms ravens co., moro-uma.. wxsnmnwn. n. c.

UNITED STATES PATENT OFFICE.

JOHN B. STONER, OF NEW YORK, N. Y., ASSIGNOR TO HERBERT B. TITUS AND CHARLES B. HILLHOUSE, OF SAME PLACE.

' ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 461,396, dated October 13,

Application filed November 1, 1890. Serial No. 370,054. (No model.)l

To all whom it may con/cern,.- Be it known that I, JOHN B. STONER, a citi zen of the United States, residing at New York, in the county ot` New York and State of New York, have invented a certain new and useful Device for Automatically Closing the Doors of Elevator-Shafts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide a device for automatically closing the doors openinginto elevator-shafts upon the passage of the elevator-car.

The device consists, principally, of two arms secured within the space between the elevator-car and the inclosing wall or casing formi-ng 011e side of the shaft and so arranged upon a common axis that while the lever-arm, Vwhich is centrally pivoted, is operated upon by the elevator-car in' passing it so operates upon the other arm that by means of a connecting-rod or equivalent device it closes the door, whether the elevator-car is passing up or down.

In the drawings, Figure l is a front elevation, partly in section, showing one side of the elevator-well with its door-space, the elevator-car guides, the closed door opening into the shaft, and the device by means of which it is closed. Fig. 2 is a similar view of the upper section of Fig. l, showing the operating-lever attached to the lower half of the door.

the line c Fig. l. Fig. Lis a sectional view of the arms as pivotally attached. Fig. 5'

bracket c, in the end of which on the side,

toward the cage or carC is journaledastudf. a designates a lever-arm, which is provided with a central integral, hub, through which passes the stud f, so that the lever ais there- Y by pivotally mounted. (See Fig. 4.) The lever ct is preferably provided with terminal Fig. 3 is an enlarged sectional view onl rollers Z fm. An arm or link b is mounted rigidly on the hub ot the lever-arm o, as shown stantially of the form shown, iu such mannerv that in passing they engage, respectively, the rolls Z m at the ends of the lever-arm ot-that is, the lever-arm o, being in a horizontal position when the door B is open, as indicated by the dotted lines, if the elevator-car is going upward the strap ZL engages with the roller Z, carrying the lever arm a, and the arm h, which revolves with it, and also the connecting-rod d to their final positions, as shown by the full lines, thus closing the door B, while if the elevator-car is passing downward the strap g engages in the same way with the roller jm at the opposite end of the lever-arm a, producing the same result. The straps g hare so shaped and so placed relatively to the lever-arm o as to engage the rollers Z m, respectively, at any point upon the dotted lines n o, which niark the through which they pass, as shown in Fig. l, thus closing and latchin g the doorB with certainty if left open to the slightest extent, and, furthermore, these straps being in shape i and position vertical for alittle space at p p,

their extreme points of contact with the rollers Zm, the door is thereby held closed and latched for an instant, thus preventing any rebound from a sudden closing, while ifzthe door remains closed the rollers Z m are without the path of the straps g h, and the elevator-car passes in either direction without coutact therewith.

lf the space between the elevator-car and the casing of the elevator-shaft within which the device is to be placed is contracted so that the straps g Zt are necessarily very narrow, they maybe made of Uliron, as shown in Fig. 5, to prevent the rollers Zm from slipping oft'.

periphery of the space IOO The lever-arm d may be so hinged as to yield by contact with the straps g h passing in the opposite direction from that above described; but this appears unnecessary, as the latch q is invariably so arranged that it can be unlatched only from the inside of the elevator-car when its door-space is opposite the door B.

Having thus described my invent-ion, what I claim, and desire to secure by Letters Patent, is

1. The combination of the cage or car having suitable oppositely-arranged projections or straps at proper points thereon, an oscillating lever-arm pivotally mounted on some xed part of the elevator-shaft, so as to be in the path of the projections on the moving car when the sliding door ot' the shaft is open, but out of the path of said projections when the said door is closed,an arm iixed on this lever and immovable relatively thereto,but movable with the lever, a pivoted link connecting the end of this arm pivotally with the door, and the horizontal sliding door, all arranged so that as the cai' moves up or down one or the other end of the-aforesaid oscillating lever-arm will be struck by the projections whenever the door is open, so that the parts may operate to close the door, substan-4 tially as described.

2. The combination of a cage or car C, having oppositely-arranged projections or straps g h thereon, a lever-arm @,pivoted to the elevator-shaft, an arm b, rigidly mounted on the arm a, so as to vibrate therewith, terminal rollers at each end of the arm a, a sliding door B, and a connecting-rod d,pivoted to the door and to the end ot' the arm b, substantially as described.,

3. The combination of the elevator C, the oppositely-arranged straps g h, fixed thereto, the lever-arm a, centrally pivoted to the casing of the elevator-shaft, the arm b, the connecting-rod d, and the sliding door B,'the lever-arn1 a being so placed that its ends are in the path of said straps when the door B is open, and the Whole so arranged as to close said door by the passage of the elevator-car, substantially as shown and described.

4. The combination of a cage C, the opposit-ely-arranged straps g h, secured thereon, said straps being partially vertical at p p, the lever-arm et, pivoted on the projecting bracket c and provided with terminal rollers Z m, an arm b, connected rigidly to the hub of the lever a, the sliding door B, and the connectingrod d, pivoted to said door and to the arm b, substantially as described.

Signed at Newr York, in the county of New York and State of New York, this 17th day of October, A. T). 1890.

JOHN B. STONER. NVitnesses:

H. B. TI'rUs, LEVI S. TENNEY. 

